Sicilian Defense: Frederico Variation
1. e4 c5 2. Nf3 g6 3. d4 f5
The Sicilian Defense: Frederico Variation is a chess opening classified as ECO B27, reached after 1. e4 c5 2. Nf3 g6 3. d4 f5. It is a line of the Sicilian Defense. White is to move.
This exact move order didn't appear in our sample of 12.6 million Lichess games: it's a rare line.
Engine evaluation: +2.31 (Stockfish, depth 27; best line 4. exf5 d5 5. fxg6 hxg6 6. dxc5 Nf6)
- ECO
- B27
- Moves
- 6 plies
- FEN
rnbqkbnr/pp1pp2p/6p1/2p2p2/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 4- PGN
1. e4 c5 2. Nf3 g6 3. d4 f5
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Comes from
Sicilian Defense: Hyperaccelerated Dragon (2… g6 3. d4) 1. e4 c5 2. Nf3 g6 3. d4
More Sicilian Defense lines (all)
- Sicilian Defense (1. e4 c5) B20
- Sicilian Defense: Amazon Attack B20
- Sicilian Defense: Big Clamp Formation B20
- Sicilian Defense: Bowdler Attack B20
- Sicilian Defense: Brick Variation B20
- Sicilian Defense: Czerniak Attack B20
- Sicilian Defense: Czerniak Attack, Queen Fianchetto Variation B20
- Sicilian Defense: Euwe Attack, Prins Gambit B20
- Sicilian Defense: Gloria Variation B20
- Sicilian Defense: Grob Variation B20
- Sicilian Defense: Keres Variation B20
- Sicilian Defense: King David's Opening B20
Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.